Heat-regulator.



E. H. MURPHY.

HEAT REGULATOR. APPLICATION FILED 00T. 29, 190B.

Patented Jan.2, 1912.

2 SHEETS-SHEET 1.

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HEAT RBGULITOB. APPLICATION FILED (NTL-29, 1908.

Patented J an. 2, 191122.

2 SHEETS-SHEET"2'V UNITED STATES PATENTv OFFICE.

EDWARD H. MURPHY, OF CHICAGO, ILLINOIS.

HEAT-REGULATOR.

fectly regulate the temperature in a room;-

second, to provide a sliding door counterweighted to normally close; third, to connect the air controlling door toathermostat to be automatically moved thereby; fourth, to make a simple effective and durable device and other features to become apparent from the description to follow. In heat regulators of this class, the heater or radiator is kept continually hot and the air in the room is insulated from the same by a casing. When it is desired to heat the room a door in the casing is opened to permit the A air to circulate through the casing and thus become heated. It is only necessary to have a door at the top of the casing to regulate the passage of air through the same; the lower part of the casing is left open. The door in the casing is preferably madeto slide loosely in vert-ical guides and is so counter-weighted as to normally move to its upper closed position. A thermostat of any desired construction is placed near the heateror radiator and is operatively connected to a valve which controls pressure used to move the air controlling door down and up.

To describe my invention so that others versed in the art to which it pertains may make and use the same, I have illustrated it on the accompanying two sheets'of drawings forming a part of thisl specification, in Which- Figure 1, is a front elevation partly in section of a heater embodying my invention; Fig. 2, is a vertical cross sectional view and Fig. 8, is an enlarged detail view of the door moving apparatus.

Similar reference characters refer to similar parts throughout the several views.

For the purpose of illustration the radiator 5 is shown by dotted lines. The casing 6 Specipcation of Letters Patent.

Application filed October 29, 1908.

Patented Jan. 2, 1912.

serial No. 460,176.

has the four vertical walls 7, 8, 9 and 10 and the top '11 which is preferablyformed by the rear wall 8 being curved forward to meet the front wall 7. All the Walls of the casing 6 are made of non-heat-conducting material 12 which may be covered by sheet metal 13. The front wall 7 is provided at the bottom with an opening or openings, as for example the perforated metal plate 14, to permit air to pass through and likewise is provided at the top with an opening 15 to permit air to pass through. It is evident that air will pass in at the bottom and will pass out through opening 15 when the radiator 5 is hot, the air being heated by the radiator in its passage upward through lthe casing 6.

To regulate the amount of heated-air that.

passes out of the casing 6 a door 16 is provided to close the opening 15l more or less as required. The door 16 is mounted to yslide freely in the vertical guide 17 and has pivotally attached to it a link 18 which has its remaining end pivoted to the free end of an arm 19 mounted on a rock-shaft 20 mounted in bearings on the Walls 9 and 10. To counterbalance the. weight of the door 16, I provide a weighted lever 21 pivoted at 22 to the wall 10, having its end connected by link 23 to arm 19 in`such manner that the weighted lever 21 will normally hold the door 16 in its uppermost position as clearly shown. in Fig.'2`. One end of shaft' 20 y-eX- tendsto the exterior of the casing 6 where it is provided with the hand operating lever 24 by means 'of which the door 16 canlbe moved upgjor down to any desired position, and beheld in any position by means of the pin 24a. The door 16 is also made of nonheat-conducting material 12, and the opening 15 may be provided with ornamental openwork to hide the door 16 from view and also to prevent careless tampering with the door.

To automatically move the door 16 up or down, I provide a thermostat 25 in any convenient place in the room and have its operating end connected to the handley of a three-way valve 26 which controls the inlet and outlet to the small pipe 27 which leads to the pressure motor 28 which in turn operates a lever 29 which is connected to the weighted lever 21 by the link 30. A certain amount of lost motion is'provided ,for

between lever 29 and lever 21.y as by slotting the lever 21 at 31 wherein thepin32 secured to link 30 is made to slide. The purl Figs. 1 and 3, by lack of v the thermostat 25..

pose of this lost motion is to permit the door 16 to be moved independent of the move-- ment of lever 29. The lever29 is pivoted at 33 and is arranged to be engaged' by pin 34 of the pressure motor 28. The pressure motor 28"'is built up of a multiple of diaphragms so that when steam or air pressure is admitted to the interiorof the diaphragms through pipe 27 the aggregate amount of movement will be transmitted to the pin 34 andthence to the lever 29. A constant pres- .sure is maintained in the pipe 35 leading to the valve ,26 and the valve is so constructed that, when in the first of three positions the pipe 35 is communicatively connected withy the pipe 27; when in the second of its three positions the entrance to pipe 27 is closed, and when in the third position the pipe 27 is communicatively connected to the outside atmosphere. Thus it will be seen that, when the thermostat l25 is made to move the handle of valve, 26 upward as viewed in heat in the room the valve 26 will be moved to its first position as above referred to and the door 16 will be moved down to open the passage 15; whenv the temperature of the room rises the thermostat 25 will move the handle ofvalve 26 downward and the valve will be moved to its second positionas above referred to and the door 16 will remain stationary; and

when the temperature of the room becomes excessive the thermostat 25 will act to move the handle of valve 26 still farther down to its thir position as above referred to and the door'16 will be raised to close the opening 15. Inthis manner the temperature of the room is automatically regulated by The thermostat' may be of any desired construction and is preferably provided with some means of adjustment in connection with a graduated scale whereby it may beset to retain the temperature of the room atjany desired degree.

1f desired a certain amount of the air, which is admitted into the bottom of the casing 6, can be let in through the opening 36 in wall 37 from the exterior of the building. The opening 36 is preferably controlled by a damper 88. The' opening 86 is in direct communication with the openingl 39 at the bottom of casing 6, preferably on the rear side thereof.

WhileIhave shown and described the door 16 as being moved by a pressure motor 28 motor operated -by steam or air pressure controlled by a thermostat 25 it is possible to connect the thermostat itself directly to a multiple of levers to move the door 16 and thus discard the pressure motor.

By this system of regulation a considerable saving' in fuel is obtained for the reason that there is very little condensation in the radiators and the radiators need not be reheated over and over.

It will be understood that the form, size, design and construction of the several parts may be materially changed without departing from the spirit of the invention.

Having thus fully described my invention what I claimas new and desire to secure by Letters Patent of the United States 1s 1. In a device 'and this pressure .of the class described, a

heating radiator, av jacket inclosing said radiator provided with an opening at the top and anl opening at the bottom, a ver .tically sliding door to close the said opening at the top counter-weighted to normally be in a closed position, thermostatic means to automatically operate said door and 10st motion between the door and the thermostatic means so that the door may be moved independently of said mea-ns.

2. In a deviceV of the class described, a heating radiator, a jacket inclosing said radiator provided with anfopening at the top and an opening at the bottom, a door to close said opening at the top pivotally mounted on the free ends, a pair of pivoted arms and counter-weighted to normally be in a closed position, a rock shaft to which shaft on the exterior of said mostatic means connected to saidshaft to automatically operate said door and lost motionbetweensaid shaft and said thermo# static means whereby-"the door can be moved independently of said meansv by mampusaid'utwo arms are rigidly secured extending outside the jacket, a hand-le secured to said.

jacket, ther- Y 

